I'm doing a project "PREPAID ENERGY METER" . I need to interface a 4×4 keypad with 89c51 .. For this i need to create a look up table .. I dont know to write the program to create a look up table.. can anyone help me, please ??
Hi, can you clarify for me - you do not know how to read the lookup table to see which button has beenpressed. Or you dont know how to make the lookup table in the first place.? for a 4x4 matrix, you would only have 16 elements in the table. so you would just enter the codes yourself. no need fora program to generate it.
i dnt knw to make the look up table and also dnt knw to read the lokup table to find which key has been pressed...... i dnt knw the codes for that .. I'm new to this ... pls help ..